Peter anderson



P. ANDERSON.

(No Model.)

PIAN OFORTE.

Patented July 17, 1894.

[Ill

Mill

INVENTOR WITNESSES:

A TTO RN! Y UNITED STATES PATENT OFFICE.

PETER ANDERSON, OF NEW YORK, N. Y.

PIANOFORTE.

SPECIFICATION forming part of Letters Tatent No. 522,955, dated July1'7, 1894.

Application filed December 18, 1893. Serial No. 494,009- (No model.)

.To an whom it may concern.-

Be it known that I, PETER ANDERSON, a citizen of the United States, anda resident of New York, in the county of New York and Stateof New York,have invented certain new and useful Improvements in Pianofortes, ofwhich the following is a specification.

My invention relates to improvements in piano-fortes, and consists ofthe novel construction, as hereinafter more fully described andillustrated in the accompanying drawings, in which Figure 1. representsa top or plan view of a portion of an upright piano embodying myinvention. Fig. 2. represents a cross section of the same Similarletters of reference indicate corresponding parts.

The letter A indicates the string plate of an upright piano forte of theusual construction, and B the wrest plank or tuning pin block with aboutone half of its lower surface resting on a block 0, while the otherhalf, namely, its front portion forms a free portion at, out ofcontactwith the sounding board and the new bridge, as shown in Fig. 2.

The letter D indicates the extended portion of the sounding board whichmay run upward and in rear of the iron plate frame and wrest plank ortuning pin block B, and which may also extend to the top of the pianoforte,which will make a much larger sounding board and one which willproduce much stronger and more prolonged musical vibrations.

The letter F indicates the tuning pins arranged in the usual manner.

The letter G indicates the old or ordinary bridge now used in pianos,and the letter I-I indicates my new bridge, placed on the sounding boardin front of the extended portion of the same, free from the iron frameand partly free from the wrest plank as clearly shown in Fi 2.

6n the top of bridge G, I place a metallic bridge piece K and secure itin place to said bridge G, by means of screws I; and in order that thenotes may be clear and distinct and free from all vibration I place uponthe bridge G, between it and the wires J, a wire N, extending at rightangles to the wire J The letter Z designates a clamping strip secured tothe upper or outer face of the bridge H and held in place upon thebridge by means of screws passingv through it and a curved bridge pieceM. The office of the metallic bridge strips is to produce a clearersound and do away with all pins now used on the bridges which are liableto split the bridges owing to the severe strain of the wires J. Themetallic bridge strips may be readily reversed in their position uponthe bridges and give the same result.

What I claim as new, and desire to secure by Letters Patent, is-

In a piano forte, the combination with the bridges G and H, located oneabove the other on the sounding board D, the strings J extending in astraight line across said bridges, the metallic curved bridge plates Kand M on the bridges G and H, adapted to hold the wires J in place, ofthe wires N between the bridge G and the wires J, for the purposespecified.

PETER ANDERSON.

Witnesses FRANCIS O. BOWEN, GEORGE KRAMER.

